Patch "Bluetooth: Fix l2cap_sock_setsockopt() with optname BT_RCVMTU" has been added to the 4.4-stable tree

[<gregkh@linuxfoundation.org>]

This is a note to let you know that I've just added the patch titled

    Bluetooth: Fix l2cap_sock_setsockopt() with optname BT_RCVMTU

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     bluetooth-fix-l2cap_sock_setsockopt-with-optname-bt_rcvmtu.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 23bc6ab0a0912146fd674a0becc758c3162baabc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Amadeusz=20S=C5=82awi=C5=84ski?=
 <amadeusz.slawinski@tieto.com>
Date: Thu, 14 Jul 2016 10:50:23 +0200
Subject: Bluetooth: Fix l2cap_sock_setsockopt() with optname BT_RCVMTU
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: Amadeusz Sławiński <amadeusz.slawinski@tieto.com>

commit 23bc6ab0a0912146fd674a0becc758c3162baabc upstream.

When we retrieve imtu value from userspace we should use 16 bit pointer
cast instead of 32 as it's defined that way in headers. Fixes setsockopt
calls on big-endian platforms.

Signed-off-by: Amadeusz Sławiński <amadeusz.slawinski@tieto.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/bluetooth/l2cap_sock.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -927,7 +927,7 @@ static int l2cap_sock_setsockopt(struct
 			break;
 		}
 
-		if (get_user(opt, (u32 __user *) optval)) {
+		if (get_user(opt, (u16 __user *) optval)) {
 			err = -EFAULT;
 			break;
 		}


Patches currently in stable-queue which might be from amadeusz.slawinski@tieto.com are

queue-4.4/bluetooth-fix-l2cap_sock_setsockopt-with-optname-bt_rcvmtu.patch